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  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1999),
  • paper QMB7

Novel multi-exciton states: homo- and hetero-2-exciton states in porphyrin J-aggregates

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Abstract

Molecular J-aggregates have attracted much attention because of ultrafast and large optical nonlinearity caused by excitonic resonance. Especially porphyrin (-aggregates are materials of great interest since they are model substances for the light-harvesting mechanism in a system of antenna chlorophyll. The one-dimensional porphyrin J-aggregates show sharp absorption peaks at 2.53 eV (S2-state: Bx-band) and 1.75 eV (S1-state: Qx-band) composing three-level Frenkel exciton system, which is depicted in Figure 1(a).

© 1999 Optical Society of America

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